1990616292 has 72 divisors (see below), whose sum is σ = 6088957056. Its totient is φ = 535290624.

The previous prime is 1990616269. The next prime is 1990616311. The reversal of 1990616292 is 2926160991.

1990616292 is a `hidden beast` number, since 1 + 9 + 9 + 0 + 616 + 29 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228048 + ... + 236615.

It is an arithmetic number, because the mean of its divisors is an integer number (84568848).

Almost surely, 2^1990616292 is an apocalyptic number.

1990616292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1990616292 is an abundant number, since it is smaller than the sum of its proper divisors (4098340764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1990616292 is a wasteful number, since it uses less digits than its factorization.

1990616292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464697 (or 464692 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 1990616292 is about 44616.3231564413. The cubic root of 1990616292 is about 1257.9475049350.

The spelling of 1990616292 in words is "one billion, nine hundred ninety million, six hundred sixteen thousand, two hundred ninety-two".